fix(kb): prevent double-commit race + collapse admin sections by default

Two unrelated UX issues in the Knowledge Base manage tab:

1. Double-commit 400 error. The polling tick at index.js:1217 was
   blindly overwriting a locally-set 'committing' status with whatever
   the server reported. If the GET /batch poll raced ahead of the POST
   commitJob reaching the DB, the card flipped back to 'awaiting_review',
   the "אשר הכל" button re-enabled, and a second click triggered a duplicate
   commit which the backend rejected with HTTP 400 ("job N is in status
   'done', expected 'awaiting_review'"). Fix: never downgrade
   'committing' → 'awaiting_review' from the polling response.

2. Admin tab scrolling. The "מקורות בנושא", "תוויות תת-נושא" and
   "משימות אחרונות" panels were always expanded on tab entry, pushing
   the actual upload form far down the page. Wrapped each in a
   collapsible body with a chevron toggle, default collapsed. Data
   lazy-loads on first expand.

Refs Task Master #21

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

manifest.json

@@ -1,14 +1,14 @@
 {
     "name": "KnowledgeBase",
     "module": "KnowledgeBase",
-    "version": "0.8.0",
+    "version": "0.8.1",
     "acceptableVersions": [
         ">=8.0.0"
     ],
     "php": [
         ">=8.1"
     ],
-    "releaseDate": "2026-04-25",
+    "releaseDate": "2026-04-26",
     "author": "klear",
     "description": "Knowledge Base — Israeli National Insurance law, regulations, and circulars. Hybrid search + ask-shira, powered by shira-hermes KB.",
     "displayLabel": "מאגר ידע"